Improvement in sash-fasteners



`Fig. 3 is a front elevation,

GEORGE H. METZ, OF WYANDOTTE, KANSAS.

IMPROVEMENT IN SASH-FASTENERS.

Specication forming part ofLetters Patent No. 16 1,050, dated March 23,1875; application filed February 17, 1875.

To all whom it may concern:

Be it known that I, GEORGE H. METZ, of the city and county of Wyandotte,in the State of Kansas, have invented a new and useful Improvement inSash-Fasteners, of which the following is a specification My fastener isconstructed with an eccentric head, pivoted within the side of the sash,so as to project from the head thereof, and having a roughened surface,to adapt it to hold by friction against the side of the Window-frame. Aspring is employed to press the head outward into its Working position,and it is constructed with a handle or leverv for retracting it. It isalso provided with a hook-shaped extremity or projection, which, whenthe window-sash is down, constitutes the lock, the said lockinghookbeing made in one piece with the eccentric by which the sash issupported when raised. The invention further consists in the combinationof the aforesaid eccentric head and hook with alocking-arm operated byakey, and serving, when the window is closed, to prevent the retractionof the fastening-hook Without the application of the said key.

In the accompanying drawings, Figure lis a front elevation of thedevice, with a portion of the window sash and frame in section, showingthe position of the parts when the sash is raised and supported by theeccentric. Fig. 2 is a vertical section on the line 2 2, Fig. 1. showingthe position of the parts when the sash is down and locked. Fig. 4 is aview of the locking-plate in the side of the window-frame.

A may represent a portion of the wall of a building; B, a portion of thewindow-frame 5 C, a portion of the side of the sash. Within the latteris pivoted, by a bolt or pin, D, an eecentrio, E, having on its Workin gface the customary roughened surface c, to adapt it to hold against theside of the Window-frame, so as to support the sash. Projecting from theeccentric head E, and cast in one piece therewith,

is a hook, F, employed to fasten the window when closed. Projectinghorizontally from the 4 rear side of the eccentric head E, and also castin one piece therewith, is a lever or handle, G, for retraotin g theeccentric head and hook by an upward pressure applied to the said leveror handle. H represents a spring pressing downward upon the heel of theeccentric head, so as to hold the roughened surface c in con; tact withthe side of the window-frame, or to press the hook F int-o lock with aplate, I, which is xed in the side of the window-frame in properposition to receive the hooked eccentric E F when the sash is closed.For this purpose the plate I is formed with two apertures, i if, thelatter of which receives the extremity of the hook F, and the former ofwhich admits the projecting portion of the eccentric E, so as to allowthe head to turn sufciently to cause the hook to enter its cavity z" inthe locking-plate. The side of the Window-frame is excavated beneath theapertures i t" to a sufficient extent, as illustrated in Fig. 3. For thepurpose of locking the fastening F so as to prevent its retraction andthe release of the window-sash by an unauthorized person, I employ anarm, J, projecting from a shaft, K, which is formed at its outer endwith aysquare, 7c, for the reception of akey, L. M represents adiskspring, pressing outward against a suitable shoulder on the shaft K,and bearing against the back of the lock-casing, so as to providesufficient friction to hold the locking-arm J in any position in Whichit may be set. To look the hook F the arm J is turned up with its endagainst theback of the hook, as shown in Fig. 3. To release it, it isturned down, as shown in Fig. l.

From the above description it will be understood that when the window isclosed and locked, as shown in Fig. 3, itis only necessary to turn thelocking-arm J down in order to retract it from the locking-hook F. Bythen applying the hand to the lever G the upward pressure employed toraise the window retracts, by the same action, the eccentric E and hookF, so as to allow the Window to be raised to any extent desired, andwhen it is released the spring H, throwing the roughened surface c ofthe eccentric E into contact with the window-frame, instantly supportsthe sash wherever it may be set.

I am aware that sash-fasteners have before been made with an eccentricfor supporting the sash and abolt for locking it shut, which could bothbe retracted by the action of a single lever; but in my inventionmaterial advantage in simplicity, efficiency, and durabil- .ity resultsfrom cast-ing the eccentric E, locking-hook F, and lever G all in onepiece. The constructionshown renders the hook F a more secure fasteningthan an ordinary sliding bolt, because the relative positions of thesaid hook and the pivot on which it turns enable me to give to the endof the hook a considerable inclination or Obliquity, so that in anattempt to raise the window the hook will catch within its socket i inthe holdin g-plate I, so as to fasten the window with perfect securityfrom any attempt to raise it from the outside, even without the use ofthe locking-arm J. An upward pressure of the hook, as applied by anattempt to raise the window-sash without pressure on the lever G, causesthe said hook to nip the edge of the lockingplate I so rmly between theface of the hook and the face-plate of the sashlock as to securely holdthe lock, and ren- `der its retraction impossible except by the reGEORGE H. METZ. NVitnesses STEPHEN ALT, GHAS. S. GEIGK.

